YASKAWA SigmaLogic7 Compact, Hardware Manual, Page: 35 / 54

4 Inputs and Outputs
4.5.1 Digital Input Circuits
29
4.5 I/O Circuits
4.5.1 Digital Input Circuits
 Photocoupler Input Circuits
This section describes CN1 connector terminals 6 to 13.
Note: The 24-VDC external power supply capacity must be 50 mA minimum.
The SERVOPACK input circuits use bi-directional photocouplers.
Select either a sink circuit or source circuit according to the
specifications required by the machine.
Note: The connection examples in 4.4 I/O Signal Wiring Examples are for sink
circuit connections.
Examples for Relay Circuits
Examples for Open-Collector
Circuits
4.7 k
Ω
e.g., /DEC
SERVOPACK
24 VDC
+24VIN
24 VDC
4.7 k
Ω
e.g., /DEC
SERVOPACK
+24VIN
Sink Circuits Source Circuits
Input Signal Polarity Input Signal Polarity
Photocoupler
Internal Signal
Level
Photocoupler
Internal Signal
Level
ON Low level ON Low level
OFF High level OFF High level
SERVOPACK input side
Switch
Photocoupler
Internal
signal
level
Internal
signal
level
Photocoupler
Switch
24 V
+
−
SERVOPACK input side
24 V
+
−
Switch
Photocoupler
Internal
signal
level
Internal
signal
level
Photocoupler
Switch